jbutton不起作用

Question

嗨我有以下代码，我有一个开始和停止按钮。当开始被按下画布开始画，但我不能按停止按钮，直到开始操作完成。我需要停下来并按下按钮恢复油漆。一旦开始按钮被按下，其他按钮不能被按下，直到画布被绘。

---

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.FlowLayout; 
import java.awt.GridLayout; 
import java.awt.Toolkit; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.util.ArrayList; 
import java.util.Hashtable; 

import javax.swing.DefaultComboBoxModel; 
import javax.swing.JButton; 
import javax.swing.JComboBox; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JPanel; 
import javax.swing.JScrollPane; 
import javax.swing.JTextField; 
import javax.swing.Timer; 


public abstract class JUIApp extends JPanel implements ActionListener { 
    public static CACanvas cacanvas= null; 
    public ArrayList<int[]> genL; 
    public JFrame frame = null; 
    protected JPanel mainPanel = null; 
    private JButton btn0 = null; 
    private JButton btn1 = null; 
    private JButton btn2 = null; 
    @SuppressWarnings("rawtypes") 
    DefaultComboBoxModel rules = null; 
    @SuppressWarnings("rawtypes") 
    JComboBox rulesCombo =null; 
    JScrollPane ruleListScrollPane=null; 
    JLabel lable=null; 
    JTextField generation=null; 
    JLabel gLable=null; 
    public static String Rule; 
    public static String Generations; 
    public boolean isChanged =false; 
    public int gridCellSize=4; 
    private static final long serialVersionUID = 1L; 
    public int genCurrent=0; 
    public int posCurrent=0; 
    public int i; 
    public Color cellColor= null; 
    public Timer waitTimer; 
    public static boolean waitFlag; 
    public static boolean alert1Flag=false; 
    public boolean stopFlag=false; 
    public JLabel Alert1=new JLabel(); 
    public int genCheck=0; 
    //private List<Point> fillCells; 
    public JUIApp() { 
     initGUI(); 

    } 
    public void initGUI() { 
     //fillCells = new ArrayList<>(25); 
     frame = new JFrame(); 
     frame.setTitle("Cellular Automata Demo"); 
     frame.setSize(1050, 610); 
     frame.setResizable(true); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

     frame.setLayout(new BorderLayout()); 
     frame.add(getMainPanel(),BorderLayout.NORTH); 
     frame.setVisible(true); 
     Toolkit.getDefaultToolkit().setDynamicLayout(false); 
     cacanvas=new CACanvas(); 
      frame.add(cacanvas); 
    } 

    @SuppressWarnings({ "unchecked", "rawtypes" }) 
    public JPanel getMainPanel() { 
     mainPanel = new JPanel(); 
     mainPanel.setLayout(new FlowLayout()); 
     //cacanvas=new CACanvas(); 

     btn0 = new JButton("Start"); 
     btn0.addActionListener(this); 
     //waitTimer = new Timer(1000, this); 
     mainPanel.add(btn0); 

     JButton btn2 = new JButton("Stop"); 
     btn2.addActionListener(new ActionListener(){ 
      public void actionPerformed(ActionEvent s) 
      { 
       stopFlag=true; 
       //cacanvas.repaint(); 
      } 
     }); 
     mainPanel.add(btn2); 
     btn1 = new JButton("Clear"); 
     btn1.addActionListener(new ActionListener() { 

      public void actionPerformed(ActionEvent e) 
      { 
       CACanvas.clearFlag=true; 
       generation.setText(""); 
       alert1Flag=true; 
       rulesCombo.setSelectedIndex(0); 
        Alert1.setText("Please enter the number of generations"); 
        Alert1.setBounds(30, 20, 5, 5); 
        Alert1.setVisible(alert1Flag); 
        mainPanel.add(Alert1); 
        cacanvas.repaint(); 
        frame.setSize(1060, 610); 

      } 
    }); 
     mainPanel.add(btn1); 
     lable=new JLabel(); 
     lable.setText("Select Rule :"); 
     mainPanel.add(lable); 
     rules=new DefaultComboBoxModel(); 
     for (int i=0;i<=100;i++) 
     { 
      String p=String.valueOf(i); 
     rules.addElement(p); 
     } 
     rules.addElement("250"); 
     rules.addElement("254"); 
     rulesCombo = new JComboBox(rules);  
     rulesCombo.setSelectedIndex(0); 

     ruleListScrollPane = new JScrollPane(rulesCombo); 
     mainPanel.add(ruleListScrollPane); 
     //mainPanel.revalidate(); 
     gLable=new JLabel(); 
     gLable.setText("Enter the number of Generations (Max 64)"); 
     generation=new JTextField(2); 

     mainPanel.add(gLable); 
     mainPanel.add(generation); 
     // mainPanel.add(cacanvas); 
     return mainPanel; 
    } 


    public abstract void run(); 

    @Override 
    public void actionPerformed(ActionEvent arg0) { 
     Alert1.setVisible(false); 
     waitFlag=false; 
     System.out.println("We received an ActionEvent " + arg0); 
     Generations=generation.getText(); 
     System.out.println(Generations); 

     Rule = ""; 
     if (rulesCombo.getSelectedIndex() != -1) {      
      Rule = 
        (String) rulesCombo.getItemAt 
       (rulesCombo.getSelectedIndex());    
     } 
     System.out.println(Rule); 
     int rule=Integer.parseInt(Rule); 
    Hashtable<String,Integer> rules= new Hashtable<String,Integer>(); 
     CARule ruleClass=new CARule(); 
     rules=ruleClass.setRule(rule); 
     CAGenetationSet sa =new CAGenetationSet(100, false,rules); 
     genL=new ArrayList<int[]>(); 
     genL=sa.runSteps(Integer.parseInt(Generations)); 
     System.out.println("calling pattern set"); 
     for(int i=0;i<=genL.size()-1;i++) 
     { 
      System.out.println("Painting generation :"+i); 

      if(stopFlag==false) 
      { 

       cacanvas.repaint(); 
      } 

      //genPaint(); 
      //sleep(); 
      int[] newCell=genL.get(i); 
      for(int r=0;r<newCell.length;r++) 
      { 

       if(newCell[r]==1) 
       { 


        System.out.println("Generaton is"+i+"CellLife is"+r); 
        cacanvas.fillCell(i,r); 


     } 
      } 

     } 




        /*cacanvas.patternSet(genL); 
        waitFlag=true; 


        System.out.println("run completed"); 
       // cacanvas.clearFlag=true; 
*/ 
    } 

    public void genPaint() 
    { 
     cacanvas.repaint(); 
    } 

    public void sleep() 
    { 
     try 
     { 
      Thread.sleep(100); 
     } 
     catch (InterruptedException e) 
     { 
      e.printStackTrace(); 
     } 

    } 
    public static void main(String[] args) { 
     JUIApp app = new JUIApp() { 

      @Override 
      public void run() { 
       // TODO Auto-generated method stub 
       System.out.println("Run method"); 

      } 



    }; 
} 
} 

Answer 1

好像你正在使用该任务的当前线程，你应该创建另一个线程和一个监听器的代码添加到新的主题。